Just tried again and the update just crashes midway-through.
After reboot: no kernel image available.
I’ll try to debug this with CLI next.
UPDATE; CLI went through w/o issues and system was able to boot cleanly. No idea why pamac-manager crashed twice and left the system in a broken state…
I’ll change my vote above.
Thank god I use btrfs for root tho and have timeshift set-up. 